Chromecast: temporary shim files for internal media codec callbacks.

chromecast/media/base/media_codec_support_simple.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include <string>
-
-#include "base/bind.h"
-#include "base/callback.h"
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/string_util.h"
-
-// TODO(servolk): Temp definitions to fix Chromecast build until media mime
-// type refactoring checks are properly upstreamed.
-namespace net {
-
-typedef base::Callback<bool(const std::string&)> IsCodecSupportedCB;
-
-static bool IsValidH264BaselineProfile(const std::string& profile_str) {
-  uint32 constraint_set_bits;
-  if (profile_str.size() != 4 ||
-      profile_str[0] != '4' ||
-      profile_str[1] != '2' ||
-      profile_str[3] != '0' ||
-      !base::HexStringToUInt(base::StringPiece(profile_str.c_str() + 2, 1),
-                             &constraint_set_bits)) {
-    return false;
-  }
-
-  return constraint_set_bits >= 8;
-}
-
-static bool IsValidH264Level(const std::string& level_str) {
-  uint32 level;
-  if (level_str.size() != 2 || !base::HexStringToUInt(level_str, &level))
-    return false;
-
-  // Valid levels taken from Table A-1 in ISO-14496-10.
-  // Essentially |level_str| is toHex(10 * level).
-  return ((level >= 10 && level <= 13) ||
-          (level >= 20 && level <= 22) ||
-          (level >= 30 && level <= 32) ||
-          (level >= 40 && level <= 42) ||
-          (level >= 50 && level <= 51));
-}
-
-static bool ParseH264CodecID(const std::string& codec_id,
-                             bool* is_ambiguous) {
-  // Make sure we have avc1.xxxxxx or avc3.xxxxxx
-  if (codec_id.size() != 11 ||
-      (!StartsWithASCII(codec_id, "avc1.", true) &&
-       !StartsWithASCII(codec_id, "avc3.", true))) {
-    return false;
-  }
-
-  std::string profile = StringToUpperASCII(codec_id.substr(5, 4));
-  if (IsValidH264BaselineProfile(profile) ||
-      profile == "4D40" || profile == "6400") {
-    *is_ambiguous = !IsValidH264Level(StringToUpperASCII(codec_id.substr(9)));
-  } else {
-    *is_ambiguous = true;
-  }
-
-  return true;
-}
-
-bool DefaultIsCodecSupported(const std::string& codec) {
-  if (codec == "1" /*PCM*/ || codec == "vorbis" || codec == "opus" ||
-      codec == "theora" || codec == "vp8" || codec == "vp8.0" ||
-      codec == "vp9" || codec == "vp9.0")
-    return true;
-
-  if (codec == "mp3" || codec == "mp4a.66" || codec == "mp4a.67" ||
-      codec == "mp4a.68" || codec == "mp4a.69" || codec == "mp4a.6B" ||
-      codec == "mp4a.40.2" || codec == "mp4a.40.02" || codec == "mp4a.40.29" ||
-      codec == "mp4a.40.5" || codec == "mp4a.40.05" || codec == "mp4a.40")
-    return true;
-
-#if defined(ENABLE_MPEG2TS_STREAM_PARSER)
-  // iOS 3.0 to 3.1.2 used non-standard codec ids for H.264 Baseline and Main
-  // profiles in HTTP Live Streaming (HLS). Apple recommends using these
-  // non-standard strings for compatibility with older iOS devices, and so many
-  // HLS apps still use these. See
-  // https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/StreamingMediaGuide/FrequentlyAskedQuestions/FrequentlyAskedQuestions.html
-  // mp4a.40.34 is also Apple-specific name for MP3 in mpeg2ts container for HLS
-  if (codec == "avc1.66.30" || codec == "avc1.77.30" || codec == "mp4a.40.34")
-    return true;
-#endif
-
-
-  bool is_ambiguous = true;
-  if (codec == "avc1" || codec == "avc3" ||
-      ParseH264CodecID(codec, &is_ambiguous)) {
-    return true;
-  }
-
-  // Unknown codec id
-  return false;
-}
-
-}
+#include "chromecast/media/base/media_codec_support.h"
 
 namespace chromecast {
 namespace media {
 
 // This is a default implementation of GetIsCodecSupportedOnChromecastCB that is
 // going to be used for brandings other than 'Chrome'. Most platforms will want
 // to use their own custom implementations of the IsCodecSupportedCB callback.
 net::IsCodecSupportedCB GetIsCodecSupportedOnChromecastCB() {
   return base::Bind(&net::DefaultIsCodecSupported);
 }
 
 }  // namespace media
 }  // namespace chromecast